In the ETCR, the cars have a maximum power of 500Kw for the qualifying laps, while in the quarter-finals, semi-finals and finals races the cars are limited to 300Kw but they are able to use the "Power Up". It is an instant increase in power to 450Kw that lasts 40 seconds for the quarter-finals and only 20 seconds for the semi-finals and the final.
The use of this button is very important for strategy because, unlike F1's DRS, this extra power is used both to attack the car in front and also to defend against a possible overtaking. The job of the engineers in the wall is to predict, warn and advise the driver when it is better to spend that energy and when a rival is set to use it.
